Reentex Information Blog

Smart Watch,1.72″ Smartwatch for Android Phones and iPhone Compatible IP67 Waterproof Fitness Watch



Price: $49.90
(as of Mar 25,2022 17:13:39 UTC – Details)

Product Description

1.72‘’ HD Color Screen Smartwatchg enjoy a more colorful and larger view.1.72‘’ HD Color Screen Smartwatchg enjoy a more colorful and larger view.


Exercise record: step counting, exercise time, exercise mileage, calorie consumption, sleep monitoring, save 30 days of exercise/sleep data
Health monitoring: real-time heart rate measurement (dynamic, static), blood pressure measurement (timed blood pressure measurement can be set), blood oxygen measurement
Smart reminder: custom alarm clock reminder, sedentary reminder, call reminder, information push (SMS/QQ/WeChat, Taobao, Alipay, Facebook, Twitter, whatAPP, Instagram, LinkedIn, messenger, Skype, line, kakaotalk, Gmail, Snapchat, Push the information prompted by the mobile phone
Other functions: custom dials, massive online dials, turning wrist to brighten the screen, time display, remote photography, theater mode settings, finding bracelets, WeChat sports, support APP air upgrade, multi-sport mode







Sedentary Reminder

Turn on the “Sedentary Reminder” function in the APP. Sedentary sitting will vibrate to remind you to move and to remind you to drink water. Remember to stay active and help reduce stress, and set the time you need to relax.

Remote Photography

If you activate the camera function in the app, the photo page is automatically called up from the phone. With the smartwatch remote photography function instead of the selfie stick, turn your wrist or press the touch button on your smartwatch to take beautiful photos.

Music Control

After the Bluetooth connection between the running watch and the mobile phone is established, you can directly control the music through the Bluetooth watch, including play/pause, previous or next song, which is more convenient for your life and sports.

1.72‘’ HD Color Screen

1.72‘’ HD Color Screen

30 day

30 day



3D curved high-definition screen shocking vision

Hyperboloid screen created by multiple process technologies, 1.72-inch 240*280 resolution

Bringing an extremely shocking visual experience, the 3D curved glass radian process is lighter and more flexible and brings you a new visual experience!

30 Days of Standby Time

Have fun 7-10 days of battery life, or 30 days of standby time on one charge. Can satisfy varieties of usage needs, no need to charge frequently.

A variety of personalized cool dials to switch at any time

A variety of colorful and fashionable dials can be switched at any time according to different scenes and different moods, making you more dazzling in various occasions.


Kindly Note:
Please use according to the details of the instruction manual
The watch’s case is made of metal. Those who are allergic to metal should pay more attention. Don’t wear the watch too tight or wear it for a long time, so your wrist skin can breath well and feel comfortable.
Sleep monitoring only records from 9:00 pm to 12:00 pm next day.
The bluetooth connect distance is 8-10m.
Smart watch data can’t use for medical purposes. The monitoring data is for reference only.
The smart watch is not compatible with PC or tablet.
Do not operate the watch underwater and wear the watch to deep dive.
Do not use in bath, sauna, hot spring or other environments with corrosive liquid and hot steam, which will lead to product failure.
If you want to get a more detailed manual and operation guide, please refer to the first page of the manual and scan the QR code to download. (Please note that we never ask you for any personal information)

Q: What to do if I can’t get it to connect to my phone or always get disconnected?

1.Please note that the maximum Bluetooth distance is 8-15 meters. If the watch was beyond the distance, it will cause the disconnection, you need to bind the watch to the app again.

2.Please keep DaFit app running in the background of your phone. If the phone clears DaFit out of the background, the phone will be disconnected from the watch.

3.If the DaFit app can’t detect the watch, please restart your phone and also reset the watch (Turn on the watch–> Click the ”Settings” icon–> “Reset”.) Then try again. If you still can’t connect the watch: please uninstall the DaFit app and also delete the “NK21” from the Bluetooth paired list of your phone. Install the DaFit app and try again.

accurate fitness tracker and connected gps: supports 8 sports such as walking, running, bicycle, hike, mountaineering, dynamic cycling, hike, fitness, treadmill, yoga. accurately record all day activities like steps, distance, calories burned, miles walked, active minutes. connecting the gps in your cellphone can track all your workout routes, distances, and physical status during exercise. stay motivated all day!
call and message notifications: when you connect the smart watch to your smartphone, you will never miss a call or message again. it will vibrate and notify you when your phone receives a call, sms text or sns notifications (facebook, twitter, whatsapp, linkedi, messenger, instagram). you can even hang up incoming phone calls straight from your wrist.
IP67 Waterproof, Long Lasting, Wide Compatibility: You can wear it when washing hands, and swimming in the pool(Don’t wear it when swimming in the sea, bathing, or sauna.). And it only takes 2 hours to charge and can be used for 7-10 days or 30 days standby time. This smartwatch is suitable for almost all smartphones, like Samsung, iPhone, and so on. The App supports iOS 10.0/Android 5.0 or above and Bluetooth 5.0.
More Health Tracking Features: Real-time dynamic heart rate monitoring function and sleep monitoring function(deep sleep, light sleep, awake time, detect your sleep from 9:00 pm to 12:00 pm next day), offering a comprehensive sleep quality analysis. More functions to explore, such as weather, alarm clock, stopwatch, timer, music controller, sedentary reminder, find phone, etc., to meet your daily needs.